You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Clutch Size in the Dotterel Charadrius morinellus: An Adaptation to Parental Incubation Behaviour?
John Atle Kålås and Lars Løfaldli
Ornis Scandinavica (Scandinavian Journal of Ornithology)
Vol. 18, No. 4 (Nov., 1987), pp. 316-319
Stable URL: http://www.jstor.org/stable/3676902
Page Count: 4
You can always find the topics here!Topics: Bird nesting, Incubation, Eggs, Clutch size, Body weight, Breeding, Weather, Single status, Evolution, Species
Were these topics helpful?See somethings inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Effects of experimental clutch enlargement on weight change and incubation schedules of individual incubating male Dotterels were measured. Two birds which were in good physical condition when the experiment started, rapidly lost weight. They also took more frequent periods off the nest, while the average length of these periods changed only slightly. Two birds in poor physical condition (> 10% lighter than average) had a low attendance even on 3-egg clutches, leaving few times each day but for longer periods. An increase in clutch size is one of these nests did not alter this incubation schedule. These data indicate that the 3-egg clutch of the Dotterel has evolved as a compromise between a high incubation constancy and the energy demands of the single incubating male.
Ornis Scandinavica (Scandinavian Journal of Ornithology) © 1987 Nordic Society Oikos